Is b.) 8 the right answer to 2(4x - 6) = 6x - 4?

If 1 km = 0.621 miles, how many miles are in a centimeter

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Leo takes 30 minutes to eat dinner, 15 minutes to change clothes, and 20 minutes to walk to practice. if leo needs to be at hockey practice at 7: 15pm,.what time does he need to begin